BLUE

bluebird bio
BLUE

Overview Fund Activity
Delisted

BLUE was delisted on the 30th of May, 2025.

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288 hedge funds and large institutions have $8.48B invested in bluebird bio in 2018 Q3 according to their latest regulatory filings, with 37 funds opening new positions, 108 increasing their positions, 99 reducing their positions, and 54 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
288
Holders Change
-19
Holders Change %
-6.19%
% of All Funds
6.59%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.05%
New
37
Increased
108
Reduced
99
Closed
54
Calls
$177M
Puts
$151M
Net Calls
+$25.9M
Net Calls Change
-$69.3M

Top Buyers

1
Capital International Investors
Capital International Investors
California
+$311M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$207M
3
Capital World Investors
Capital World Investors
California
+$136M
4
Fidelity Investments
Fidelity Investments
Massachusetts
+$88.4M
5
Capital Research Global Investors
Capital Research Global Investors
California
+$72.2M

Top Sellers

1
Goldman Sachs
Goldman Sachs
New York
-$54M
2
Millennium Management
Millennium Management
New York
-$53.8M
3
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
-$29.2M
4
MWNA
Marshall Wace North America
New York
-$29M
5
Citigroup
Citigroup
New York
-$26M
Name Holding Trade Value Shares
Change 		Shares
Change %
Dimensional Fund Advisors
51
Dimensional Fund Advisors
Texas
$19.5M +$320K +169 +2%
CS
52
Candriam SCA
Luxembourg
$15.1M +$5.55M +2,934 +58%
LCM
53
Laurion Capital Management
New York
$15M +$15M +7,955 New
Allianz Asset Management
54
Allianz Asset Management
Germany
$14.8M +$325K +172 +2%
AAMU
55
Amundi Asset Management US
Massachusetts
$14M +$2.16M +1,143 +18%
Citigroup
56
Citigroup
New York
$13.9M -$26M -13,753 -65%
Swiss National Bank
57
Swiss National Bank
Switzerland
$13.6M +$876K +463 +7%
Invesco
58
Invesco
Georgia
$13.1M -$7.28M -3,848 -36%
Kayne Anderson Rudnick Investment Management
59
Kayne Anderson Rudnick Investment Management
California
$13M +$94.6K +50 +0.7%
AC
60
Armistice Capital
New York
$12.8M -$13.4M -7,102 -51%
TCM
61
Tekla Capital Management
Massachusetts
$12.8M +$2.28M +1,203 +22%
California State Teachers Retirement System (CalSTRS)
62
California State Teachers Retirement System (CalSTRS)
California
$12.4M +$923K +488 +8%
SFM
63
Sphera Funds Management
Israel
$11.4M +$862K +456 +8%
Millennium Management
64
Millennium Management
New York
$11.4M -$53.8M -28,458 -83%
California Public Employees Retirement System
65
California Public Employees Retirement System
California
$11.3M -$1.68M -890 -13%
GTC
66
Ghost Tree Capital
New York
$11M -$4.38M -2,316 -29%
PI
67
Putnam Investments
Massachusetts
$10.8M -$1.35M -716 -11%
Wells Fargo
68
Wells Fargo
California
$10.2M +$408K +216 +4%
FCM
69
Frontier Capital Management
Massachusetts
$10.1M -$3.77M -1,994 -27%
BNP Paribas Asset Management
70
BNP Paribas Asset Management
France
$9.8M +$1.36M +721 +16%
Royal Bank of Canada
71
Royal Bank of Canada
Ontario, Canada
$9.79M +$880K +465 +10%
State Board of Administration of Florida Retirement System
72
State Board of Administration of Florida Retirement System
Florida
$9.45M +$180K +95 +2%
DM
73
Deerfield Management
New York
$8.97M -$7.53M -3,981 -46%
BBA
74
Baker Bros. Advisors
New York
$8.68M -$20.5M -10,851 -70%
RhumbLine Advisers
75
RhumbLine Advisers
Massachusetts
$8.24M +$409K +216 +5%
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